[Sip-implementors] unexpected header in SIP response

Wed, 25 Jun 2008 01:48:29 -0700 

Query on such an scenario:
 
As we know that the Header - Max-Forwards are only for SIP Request
message, however, if the UAC receives a 183 message with Max-Forwards
header present, how the UAC should react to such a response? Should the
call be taken down or go ahead? Is there an explicit description on such
an error handling? 
 
Thanks,
 
Alex Zhang
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